PLC Based Industrial Conveyor Ladder Logic
This is a PLC Program to start a Belt Conveyor and also make it selectable from where you want to start a conveyor from Local or Remote. Design SCADA graphics…
How O-Ring Failure caused NASA’s shuttle to Blast ?
The "Technical" Story :- Below you can see Violet Part which is the Steel wall The Gray part is Fixed Propellant. In simple words these make the shuttle motor (Refer…
What is NAMUR NE 43?
Well NAMUR NE 43 is in trend to be mentioned with 4-20 mA output. It is said it increases diagnostic features ? But what can you do more in 4-20…
Facts on Thermowell Insulation Thickness
Can Insulation Thickness affect Thermowell U-Length ? Thermowell Tip must be at least 2 mm immersed in Liquid whose temperature is to be measured (As per API 551) In 2-phase service…
Why is Orifice Beta in between 0.3 to 0.7?
Why we must keep the Orifice Beta ratio between 0.3 to 0.7 values during orifice calculation, orifice design, and selection?
Transmitter Minimum Span, Accuracy & Turndown
Relation between Minimum span, accuracy & Turndown in Transmitters with a practical example Before explaining minimum span & Turndown, lets start by an example highlighting Maximum span of sensor. Suppose…
Scaling with Parameters (SCP) Instruction in PLC
To study the working of Scaling with Parameters (SCP) Instruction in Allen Bradley programmable logic controllers (PLC). Scaling with Parameters (SCP) Instruction Block Name: SCP – Scaling with parameters In…
What is Live Zero in 4-20 mA Current Loop?
The popular myth about 4-20 mA, debunked. A lot of C&I practitioners (including me) has long believed that the establishment of 4 mA as the lower range of the widely…
Ladder Logic for Flow Meter Totalizer
This is a PLC Ladder Logic to calculate the flow rate and also count the total flow or totalizer. Flow Meter Totalizer By using some math, bit and comparator functions,…
Burner Management System Logic and Interlock
Burner Management System (BMS) automatically initiate a safe operating or shutdown sequence to prevent an explosion from occurring inside furnace.
